Re: "admins who work with Cisco are very familiar with"
It's been kinda downhill since CatOS. There was a brief blip of time where IOS might have had a glimmer of hope, but it was crushed when NX-OS was spawned. Somewhere in there, anyway.
I can mostly remember looking at a Cat6509 (RIP) cli prompt way back when, and not being overly taken aback by the number of available options.
Whereas last time I looked at a Nexus prompt command-completion it felt like the thing was going to scroll off the page.
Same thing happens to other pre-dot-com era kit peddlers too. E.g. NetApp Ontap ("7-mode" or whatever they called it) used to have a pretty tight and concise set of commands, but modern "Cmode" (?) seems to have a pretty deep and wide syntax tree.